Add the Linux magic to the EFI file header to allow running our test programs with GRUB's linux command. This will allow us to dump the fixed-up device tree with our dtbdump.efi tool.
Signed-off-by: Heinrich Schuchardt <[email protected]> --- arch/arm/lib/crt0_aarch64_efi.S | 3 ++- include/asm-generic/pe.h | 2 ++ 2 files changed, 4 insertions(+), 1 deletion(-) diff --git a/arch/arm/lib/crt0_aarch64_efi.S b/arch/arm/lib/crt0_aarch64_efi.S index 368933ecf2..492195f765 100644 --- a/arch/arm/lib/crt0_aarch64_efi.S +++ b/arch/arm/lib/crt0_aarch64_efi.S @@ -18,7 +18,8 @@ .globl ImageBase ImageBase: .short IMAGE_DOS_SIGNATURE /* 'MZ' */ - .skip 58 /* 'MZ' + pad + offset == 64 */ + .skip 54 /* 'MZ' + pad + offset == 64 */ + .long LINUX_ARM64_MAGIC /* For GRUB's linux command */ .long pe_header - ImageBase /* Offset to the PE header */ pe_header: .long IMAGE_NT_SIGNATURE /* 'PE' */ diff --git a/include/asm-generic/pe.h b/include/asm-generic/pe.h index b247519a3d..a1df747134 100644 --- a/include/asm-generic/pe.h +++ b/include/asm-generic/pe.h @@ -51,4 +51,6 @@ #define IMAGE_SUBSYSTEM_EFI_RUNTIME_DRIVER 12 #define IMAGE_SUBSYSTEM_EFI_ROM 13 +#define LINUX_ARM64_MAGIC 0x644d5241 + #endif /* _ASM_PE_H */ -- 2.29.2
